Grain-drill.



Patented Jan. 30, 1900.

B. F. HAFER.

GRAIN DRILL.

(Application filed June 20, 1899.)

(N0 ModeL) Smarts PATENT OFFICE.

llENL XMIN l HAFEP, OF OKLAHOMA, TERRITORY OF OKLAHOMA.

GRAiN-DRl-LL.

SPECIFICATION forming part of Letters Patent No. 642,224, dated January 30, 1900.

Application filed June 20, 1899. Serial No. 721,234. (No model.)

To alt whom, it Til/(by concern.-

Be it known that I, BENJAMIN F. I'IAFER, a citizen of the United States, residing at Oklahoma city, in the county of Oklahoma, Oklahoma Territory, have invented certain new and useful Improvements in Grain-Drills; and I do hereby declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to grain-drills, and more particularly to the mountings for the furrow-opening devices, whereby they may be adjusted laterally to insure the tracking of the grain tubes or boots, which is essential to insure the seed being planted inthe trenches.

The invention is designed chiefly as an improvement on the machine set forth in Letters Patent of the United States issued to me October 18, 1898, Serial No. 612,721. The bars or arms carrying the disks or furrowopening devices are rigidly attached to the supporting-bar and when sprung or bent to cause a disalinement of the grain-tubes and furrow-openers cannot be moved to bring the parts into longitudinal register or aline- 1nent.

The improvement, merits, and advantages of the invention will be apparent from the appended drawings when taken in connection with the following description.

The invention is capable of changes within its scope, as will be readily comprehended; and it consists, essentially, of the novel features, details of construction, and combinations of parts, which hereinafter will be more particularly set forth, illustrated, and claimed.

Referring to the drawings forming a part of the specification, Figure 1 is a detail view in elevation of a grain-drill, showing the application of the invention. Fig. 2 is a detail plan View. Fig. 3 is a transverse section of a coupling.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The form of grain-drill illustrated is substantially the same as that shown in my former patent herein referred to, the grain tubes or spouts being indicated at 1, the disks or furrow-openers at 2, the companion bars or arms carrying the furrow-openers at 3, and the supporting-bar to which the arms 3 are attached at a. The supporting-bar 4 is suspended from the main frame by hangers 5 and bars 6 and is fixed with reference to the said frame, hopper, and pole. The bars or arms 3 are provided in pairs, each pair re ceiving a disk or furrow-opener 2. The for ward ends of the bars or arms 3 have openings 7 to receive a bolt or fastening 8, by means of which they are attached to the coupling C, adjustably connected with the supporting-bar 4, a coupling being provided for each of the arms and for each furrow-opener.

The coupling consists of upper and lower members or parts having ears 9 at their forward edges and corresponding ears 10 at their rear edges, said ears having vertical openings in coincident relation to receive a bolt 11,0011- necting the front ears 9, and the bolt 12, securing the rear ears. The body portion of each member of the coupling is formed with parallel semicircular grooves or seats 13 and 14 of different diameters and which when the parts or sections of the coupling are brought together unitedly form openings for the reception of the supporting-bar at and bolt or fastening 8. The grooves or seats 13 and 11 are spaced apart a short distance and are of a diameter approximating the diameter of the bar l and fastening 8, which are snugly fitted therein. WVhen the parts or members of the coupling are fitted together, the one above and the other below the bar 4, the latter and the fastening 8 are secured in the respective seats by tightening the fastenings or bolts 11 and 12. Should the arms 3 become sprung or bent or require adjustment on the bar at to bring the furrow-openers and grain-spouts into line, the bolts 11 and 12 are loosened sufficiently to permit of a movement of the coupling upon the bar 4 after which said coupling is fixed in an adjusted position by retightening the bolt-s or fastenings l1 and 12.

The construction of the coupling is such as to admit of a pair of bars or arms 3 being formed of a single bar of metal doubled upon itself at a medial point, the folded portion being adapted to be clamped in the opening formed by the corresponding grooves 14.

When the bars or arms are integrally formed, it is necessary to separate the parts of the coupling in order to admit of their being applied thereto, or when the arms are separate, as indicated, they can be applied to the coupling or removed therefrom without disturbing the same when fixed to the bar 4 in the required position. By removing the nut from the threaded end of the bolt or fastening 8 the latter can be slipped from the opening of the coupling G or passed into said opening, thereby admitting of the ready separation or application of the arms 3 thereto. The bolt or equivalent part 8 may be adapted to turn freely in the rearopening of the coupling, thereby providing for a vertical adjustment of the furrow-openers to enable them to adapt themselves to the rolling condition of the surface over which the implement is passing.

The coupling may be cast, drop-forged, or stamped from heavy plate metal, as found most advantageous, and can be placed in position with either member or part uppermost, since each member is the duplicate of the other.

Having thus described the invention, what is claimed as new 'is- In a grain-drill, the combination with the grain spouts or boots, a transverse supporting-bar, and pairs of arms provided with furrow-openers, of couplings composed of corresponding parts having front and rear ears formed with vertically-alining openings and having the inner or meeting face of each part formed with spaced parallel semicircular straight grooves of different diameters, which grooves unitedly form straight parallel transverse openings when the parts of the coupling are brought together, a bolt connecting the front ends of a pair of arms and fitted in the rear straight transverse opening of the coupling, and clamp-bolts connecting the terminal ears of the parts of the coupling, substantially as set forth. 7

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN F. HAFER. Witnesses:

W. L. ALEXANDER, A. G. OAFFREY. 

